Recommended for high school students! A collection of easy one-day science project ideas

solar water heater

Let's make a 'PET bottle water heater' that heats water with sunlight!

An experiment to see whether you can make hot water using sunlight—the simplicity of doing it with just a plastic bottle and paint is also a key point.

The procedure is simply to paint the plastic bottle with paint, fill it with water, and then monitor how the temperature changes under sunlight.

It’s important to thoroughly coat it with opaque paint, as if wrapping the transparent plastic bottle.

If you prepare various colors, you can observe temperature differences by color and find out which colors absorb more sunlight.

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kappamaki

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Japanese tea

[Independent Research] Become a Tea Expert in One Day—Teach Your Teacher, Too!

When time is limited, it’s hard to prepare anything unusual, isn’t it? So here’s something to try: a study of Japanese tea.

You should be able to find tea leaves at nearby stores like supermarkets or shopping malls.

Once you get some, explore how the flavor changes with water temperature and steeping time, and figure out the best way to brew it for the most delicious taste.

Since you’ll probably be brewing a lot of tea, having paper cups on hand will be convenient! You could also look for traditional Japanese sweets that pair well with tea.

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yamamoto

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Telescope Making

[Lunar Eclipse] Observe the night sky with a handmade telescope! [How to make one]

Let’s try making a telescope that lets you see distant objects large and clearly using materials that are easy to get.

Precisely because we’re building it with familiar items, it helps dispel the idea that it’s difficult while also teaching how a telescope works.

The tube section will be made from cardboard and a potato chip can, and the lenses will come from a magnifying glass and reading glasses.

It’s a simple process of mounting each lens inside the tube, but small touches—like surrounding the lenses with black paper—are also important.

It’s recommended to make small adjustments as you go, thinking about how to achieve a clearer image.

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kappamaki

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Diatomaceous earth coaster

Diatomaceous Earth Coaster DIY Kit: Basic How-To

When you leave a glass filled with a cold drink on the table, condensation forms and makes the surface wet.

Let’s try making your own diatomaceous earth coasters that absorb those droplets.

Because it’s closely related to staying hydrated, it’s also perfect as a summer science project.

The steps are simple: put water in a paper cup, add diatomaceous earth powder and stir, pour it into a mold, and let it dry—that’s it.

The key is to mix so there’s no unevenness and to remove air bubbles thoroughly; keep this in mind to make a sturdy coaster that won’t crack.

If you use waterproof paint at the water-mixing stage, you can color the entire piece as well.

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kappamaki

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Make compost from kitchen waste

Just 30 seconds of work! Odor-free, bug-free—let’s make high-quality kitchen-scrap compost! #cardboardcompost #foodwastecompost #Kiero

It’s an easy project you can do in a day, but with a change in angle it could turn into a grand investigation: “Making compost from kitchen scraps.” Basically, you just put soil in a storage bin, mix in food waste, and leave it.

You can add an extra step like pouring in rice-washing water or adding natto, but most of the time it’s just left alone.

If you want to make it a proper study, there are plenty of variables to test: swap rice-washing water for other liquids, replace natto with yogurt, and so on.

Exploring fermentation times also seems quite deep.

It’s a great science project for a passionate middle schooler who doesn’t want to settle for an ordinary summer!

Let’s investigate the power of air suction!

Fun experiment: Let's investigate the lifting power of air!

You can easily experiment with the power of air suction using things you have at home! First, prepare a candle, an aluminum dish, water, and a glass cup.

To make it easier to see, it’s best to color the water with paint or food coloring.

Here’s how to do the experiment.

First, stand the candle in the center of the aluminum dish and pour in the colored water so that the bottom part of the candle is slightly submerged.

Light the candle and cover it from above with the glass cup.

As you do this, changes in air pressure inside the cup will cause the water outside the cup to be drawn rapidly up into it.

It’s a very mysterious and fun experiment!

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Yoimachi Jēn

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Making insect repellent spray

[DIY] Only 3 Ingredients! Easy Insect Repellent Spray with Peppermint Oil | Great for Camping! [CAINZ]

When playing outside in the summer, insect repellent spray is just as important as sunscreen.

It’s an essential item to avoid discomfort later! Here, we’re introducing a DIY insect repellent spray you can make with just three ingredients.

It only takes about 10 minutes to make, so it’s an easy science project even for lower elementary grades.

The ingredients are peppermint oil, water, and rubbing alcohol (ethanol).

Put the peppermint oil and ethanol into a container and shake well to mix.

Then add the water and shake again in the same way, and you’re done! Please summarize the steps and key points, such as the order in which to add the ingredients, when you write it up.

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sasashina

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